📄 tanstack/pacer/latest/docs/framework/react/examples/useRateLimitedState
File: useRateLimitedState.md | Updated: 11/15/2025
Source: https://tanstack.com/pacer/latest/docs/framework/react/examples/useRateLimitedState
Search...
+ K
Auto
Docs Examples GitHub Contributors
Docs Examples GitHub Contributors
Docs Examples GitHub Contributors
Docs Examples Github Contributors
Docs Examples Github Contributors
Docs Examples Github Contributors
Docs Examples Github Contributors
Docs Examples Github Contributors
Maintainers Partners Support Learn StatsBETA Discord Merch Blog GitHub Ethos Brand Guide
Documentation
Framework
React
Version
Latest
Search...
+ K
Menu
Getting Started
Guides
API Reference
Debouncer API Reference
Throttler API Reference
Rate Limiter API Reference
Queue API Reference
Batcher API Reference
Debouncer Examples
Throttler Examples
Rate Limiter Examples
Queue Examples
Batcher Examples
TanStack Query Examples
Framework
React
Version
Latest
Menu
Getting Started
Guides
API Reference
Debouncer API Reference
Throttler API Reference
Rate Limiter API Reference
Queue API Reference
Batcher API Reference
Debouncer Examples
Throttler Examples
Rate Limiter Examples
Queue Examples
Batcher Examples
TanStack Query Examples
React Example: UseRateLimitedState
=====================================================================================================================================================================================================================================================================================================================================================================================================================================================
Code ExplorerCode
Interactive SandboxSandbox
-
public
-
src
index.tsx
-
.eslintrc.cjs
-
.gitignore
-
README.md
-
index.html
-
package.json
-
tsconfig.json
-
vite.config.ts
tsx
import { useState } from 'react'
import ReactDOM from 'react-dom/client'
import { useRateLimitedState } from '@tanstack/react-pacer/rate-limiter'
function App1() {
const [windowType, setWindowType] = useState<'fixed' | 'sliding'>('fixed')
const [instantCount, setInstantCount] = useState(0)
// Using useRateLimiter with a rate limit of 5 executions per 5 seconds
const [limitedCount, setLimitedCount, rateLimiter] = useRateLimitedState(
instantCount,
{
// enabled: () => instantCount > 2, // optional, defaults to true
limit: 5,
window: 5000,
windowType: windowType,
onReject: (rateLimiter) =>
console.log(
'Rejected by rate limiter',
rateLimiter.getMsUntilNextWindow(),
),
},
// Optional Selector function to pick the state you want to track and use
(state) => ({
executionCount: state.executionCount,
rejectionCount: state.rejectionCount,
}),
)
function increment() {
// this pattern helps avoid common bugs with stale closures and state
setInstantCount((c) => {
const newInstantCount = c + 1 // common new value for both
setLimitedCount(newInstantCount) // rate-limited state update
return newInstantCount // instant state update
})
}
return (
<div>
<h1>TanStack Pacer useRateLimitedState Example 1</h1>
<div style={{ display: 'grid', gap: '0.5rem', marginBottom: '1rem' }}>
<label>
<input
type="radio"
name="windowType"
value="fixed"
checked={windowType === 'fixed'}
onChange={() => setWindowType('fixed')}
/>
Fixed Window
</label>
<label>
<input
type="radio"
name="windowType"
value="sliding"
checked={windowType === 'sliding'}
onChange={() => setWindowType('sliding')}
/>
Sliding Window
</label>
</div>
<table>
<tbody>
<tr>
<td>Execution Count:</td>
<td>{rateLimiter.state.executionCount}</td>
</tr>
<tr>
<td>Rejection Count:</td>
<td>{rateLimiter.state.rejectionCount}</td>
</tr>
<tr>
<td>Instant Count:</td>
<td>{instantCount}</td>
</tr>
<tr>
<td>Rate Limited Count:</td>
<td>{limitedCount}</td>
</tr>
</tbody>
</table>
<div>
<button onClick={increment}>Increment</button>
<button onClick={() => alert(rateLimiter.getRemainingInWindow())}>
Remaining in Window
</button>
<button onClick={() => alert(rateLimiter.reset())}>Reset</button>
</div>
<pre style={{ marginTop: '20px' }}>
{JSON.stringify(rateLimiter.store.state, null, 2)}
</pre>
</div>
)
}
function App2() {
const [windowType, setWindowType] = useState<'fixed' | 'sliding'>('fixed')
const [instantSearch, setInstantSearch] = useState('')
// Using useRateLimiter with a rate limit of 5 executions per 5 seconds
const [limitedSearch, setLimitedSearch, rateLimiter] = useRateLimitedState(
instantSearch,
{
// enabled: instantSearch.length > 2, // optional, defaults to true
limit: 5,
window: 5000,
windowType: windowType,
onReject: (rateLimiter) =>
console.log(
'Rejected by rate limiter',
rateLimiter.getMsUntilNextWindow(),
),
},
// Optional Selector function to pick the state you want to track and use
(state) => ({
executionCount: state.executionCount,
rejectionCount: state.rejectionCount,
}),
)
function handleSearchChange(e: React.ChangeEvent<HTMLInputElement>) {
const newValue = e.target.value
setInstantSearch(newValue)
setLimitedSearch(newValue)
}
return (
<div>
<h1>TanStack Pacer useRateLimitedState Example 2</h1>
<div style={{ display: 'grid', gap: '0.5rem', marginBottom: '1rem' }}>
<label>
<input
type="radio"
name="windowType2"
value="fixed"
checked={windowType === 'fixed'}
onChange={() => setWindowType('fixed')}
/>
Fixed Window
</label>
<label>
<input
type="radio"
name="windowType2"
value="sliding"
checked={windowType === 'sliding'}
onChange={() => setWindowType('sliding')}
/>
Sliding Window
</label>
</div>
<div>
<input
autoFocus
type="search"
value={instantSearch}
onChange={handleSearchChange}
placeholder="Type to search..."
style={{ width: '100%' }}
/>
</div>
<table>
<tbody>
<tr>
<td>Execution Count:</td>
<td>{rateLimiter.state.executionCount}</td>
</tr>
<tr>
<td>Rejection Count:</td>
<td>{rateLimiter.state.rejectionCount}</td>
</tr>
<tr>
<td>Instant Search:</td>
<td>{instantSearch}</td>
</tr>
<tr>
<td>Rate Limited Search:</td>
<td>{limitedSearch}</td>
</tr>
</tbody>
</table>
<div>
<button onClick={() => alert(rateLimiter.getRemainingInWindow())}>
Remaining in Window
</button>
<button onClick={() => alert(rateLimiter.reset())}>Reset</button>
</div>
<pre style={{ marginTop: '20px' }}>
{JSON.stringify(rateLimiter.store.state, null, 2)}
</pre>
</div>
)
}
function App3() {
const [windowType, setWindowType] = useState<'fixed' | 'sliding'>('fixed')
const [currentValue, setCurrentValue] = useState(50)
const [instantExecutionCount, setInstantExecutionCount] = useState(0)
// Using useRateLimitedState with a rate limit of 5 executions per 5 seconds
const [limitedValue, setLimitedValue, rateLimiter] = useRateLimitedState(
currentValue,
{
limit: 20,
window: 2000,
windowType: windowType,
onReject: (rateLimiter) =>
console.log(
'Rejected by rate limiter',
rateLimiter.getMsUntilNextWindow(),
),
},
// Optional Selector function to pick the state you want to track and use
(state) => ({
executionCount: state.executionCount,
rejectionCount: state.rejectionCount,
}),
)
function handleRangeChange(e: React.ChangeEvent<HTMLInputElement>) {
const newValue = parseInt(e.target.value, 10)
setCurrentValue(newValue)
setInstantExecutionCount((c) => c + 1)
setLimitedValue(newValue)
}
return (
<div>
<h1>TanStack Pacer useRateLimitedState Example 3</h1>
<div style={{ display: 'grid', gap: '0.5rem', marginBottom: '1rem' }}>
<label>
<input
type="radio"
name="windowType3"
value="fixed"
checked={windowType === 'fixed'}
onChange={() => setWindowType('fixed')}
/>
Fixed Window
</label>
<label>
<input
type="radio"
name="windowType3"
value="sliding"
checked={windowType === 'sliding'}
onChange={() => setWindowType('sliding')}
/>
Sliding Window
</label>
</div>
<div style={{ marginBottom: '20px' }}>
<label>
Current Range:
<input
type="range"
min="0"
max="100"
value={currentValue}
onChange={handleRangeChange}
style={{ width: '100%' }}
/>
<span>{currentValue}</span>
</label>
</div>
<div style={{ marginBottom: '20px' }}>
<label>
Rate Limited Range (Readonly):
<input
type="range"
min="0"
max="100"
value={limitedValue}
readOnly
style={{ width: '100%' }}
/>
<span>{limitedValue}</span>
</label>
</div>
<table>
<tbody>
<tr>
<td>Execution Count:</td>
<td>{rateLimiter.state.executionCount}</td>
</tr>
<tr>
<td>Rejection Count:</td>
<td>{rateLimiter.state.rejectionCount}</td>
</tr>
<tr>
<td>Remaining in Window:</td>
<td>{rateLimiter.getRemainingInWindow()}</td>
</tr>
<tr>
<td>Ms Until Next Window:</td>
<td>{rateLimiter.getMsUntilNextWindow()}</td>
</tr>
<tr>
<td>Instant Executions:</td>
<td>{instantExecutionCount}</td>
</tr>
<tr>
<td>Saved Executions:</td>
<td>{instantExecutionCount - rateLimiter.state.executionCount}</td>
</tr>
<tr>
<td>% Reduction:</td>
<td>
{instantExecutionCount === 0
? '0'
: Math.round(
((instantExecutionCount -
rateLimiter.state.executionCount) /
instantExecutionCount) *
100,
)}
%
</td>
</tr>
</tbody>
</table>
<div style={{ color: '#666', fontSize: '0.9em' }}>
<p>Rate limited to 20 updates per 2 seconds</p>
</div>
<pre style={{ marginTop: '20px' }}>
{JSON.stringify(rateLimiter.store.state, null, 2)}
</pre>
</div>
)
}
const root = ReactDOM.createRoot(document.getElementById('root')!)
root.render(
<div>
<App1 />
<hr />
<App2 />
<hr />
<App3 />
</div>,
)
import { useState } from 'react'
import ReactDOM from 'react-dom/client'
import { useRateLimitedState } from '@tanstack/react-pacer/rate-limiter'
function App1() {
const [windowType, setWindowType] = useState<'fixed' | 'sliding'>('fixed')
const [instantCount, setInstantCount] = useState(0)
// Using useRateLimiter with a rate limit of 5 executions per 5 seconds
const [limitedCount, setLimitedCount, rateLimiter] = useRateLimitedState(
instantCount,
{
// enabled: () => instantCount > 2, // optional, defaults to true
limit: 5,
window: 5000,
windowType: windowType,
onReject: (rateLimiter) =>
console.log(
'Rejected by rate limiter',
rateLimiter.getMsUntilNextWindow(),
),
},
// Optional Selector function to pick the state you want to track and use
(state) => ({
executionCount: state.executionCount,
rejectionCount: state.rejectionCount,
}),
)
function increment() {
// this pattern helps avoid common bugs with stale closures and state
setInstantCount((c) => {
const newInstantCount = c + 1 // common new value for both
setLimitedCount(newInstantCount) // rate-limited state update
return newInstantCount // instant state update
})
}
return (
<div>
<h1>TanStack Pacer useRateLimitedState Example 1</h1>
<div style={{ display: 'grid', gap: '0.5rem', marginBottom: '1rem' }}>
<label>
<input
type="radio"
name="windowType"
value="fixed"
checked={windowType === 'fixed'}
onChange={() => setWindowType('fixed')}
/>
Fixed Window
</label>
<label>
<input
type="radio"
name="windowType"
value="sliding"
checked={windowType === 'sliding'}
onChange={() => setWindowType('sliding')}
/>
Sliding Window
</label>
</div>
<table>
<tbody>
<tr>
<td>Execution Count:</td>
<td>{rateLimiter.state.executionCount}</td>
</tr>
<tr>
<td>Rejection Count:</td>
<td>{rateLimiter.state.rejectionCount}</td>
</tr>
<tr>
<td>Instant Count:</td>
<td>{instantCount}</td>
</tr>
<tr>
<td>Rate Limited Count:</td>
<td>{limitedCount}</td>
</tr>
</tbody>
</table>
<div>
<button onClick={increment}>Increment</button>
<button onClick={() => alert(rateLimiter.getRemainingInWindow())}>
Remaining in Window
</button>
<button onClick={() => alert(rateLimiter.reset())}>Reset</button>
</div>
<pre style={{ marginTop: '20px' }}>
{JSON.stringify(rateLimiter.store.state, null, 2)}
</pre>
</div>
)
}
function App2() {
const [windowType, setWindowType] = useState<'fixed' | 'sliding'>('fixed')
const [instantSearch, setInstantSearch] = useState('')
// Using useRateLimiter with a rate limit of 5 executions per 5 seconds
const [limitedSearch, setLimitedSearch, rateLimiter] = useRateLimitedState(
instantSearch,
{
// enabled: instantSearch.length > 2, // optional, defaults to true
limit: 5,
window: 5000,
windowType: windowType,
onReject: (rateLimiter) =>
console.log(
'Rejected by rate limiter',
rateLimiter.getMsUntilNextWindow(),
),
},
// Optional Selector function to pick the state you want to track and use
(state) => ({
executionCount: state.executionCount,
rejectionCount: state.rejectionCount,
}),
)
function handleSearchChange(e: React.ChangeEvent<HTMLInputElement>) {
const newValue = e.target.value
setInstantSearch(newValue)
setLimitedSearch(newValue)
}
return (
<div>
<h1>TanStack Pacer useRateLimitedState Example 2</h1>
<div style={{ display: 'grid', gap: '0.5rem', marginBottom: '1rem' }}>
<label>
<input
type="radio"
name="windowType2"
value="fixed"
checked={windowType === 'fixed'}
onChange={() => setWindowType('fixed')}
/>
Fixed Window
</label>
<label>
<input
type="radio"
name="windowType2"
value="sliding"
checked={windowType === 'sliding'}
onChange={() => setWindowType('sliding')}
/>
Sliding Window
</label>
</div>
<div>
<input
autoFocus
type="search"
value={instantSearch}
onChange={handleSearchChange}
placeholder="Type to search..."
style={{ width: '100%' }}
/>
</div>
<table>
<tbody>
<tr>
<td>Execution Count:</td>
<td>{rateLimiter.state.executionCount}</td>
</tr>
<tr>
<td>Rejection Count:</td>
<td>{rateLimiter.state.rejectionCount}</td>
</tr>
<tr>
<td>Instant Search:</td>
<td>{instantSearch}</td>
</tr>
<tr>
<td>Rate Limited Search:</td>
<td>{limitedSearch}</td>
</tr>
</tbody>
</table>
<div>
<button onClick={() => alert(rateLimiter.getRemainingInWindow())}>
Remaining in Window
</button>
<button onClick={() => alert(rateLimiter.reset())}>Reset</button>
</div>
<pre style={{ marginTop: '20px' }}>
{JSON.stringify(rateLimiter.store.state, null, 2)}
</pre>
</div>
)
}
function App3() {
const [windowType, setWindowType] = useState<'fixed' | 'sliding'>('fixed')
const [currentValue, setCurrentValue] = useState(50)
const [instantExecutionCount, setInstantExecutionCount] = useState(0)
// Using useRateLimitedState with a rate limit of 5 executions per 5 seconds
const [limitedValue, setLimitedValue, rateLimiter] = useRateLimitedState(
currentValue,
{
limit: 20,
window: 2000,
windowType: windowType,
onReject: (rateLimiter) =>
console.log(
'Rejected by rate limiter',
rateLimiter.getMsUntilNextWindow(),
),
},
// Optional Selector function to pick the state you want to track and use
(state) => ({
executionCount: state.executionCount,
rejectionCount: state.rejectionCount,
}),
)
function handleRangeChange(e: React.ChangeEvent<HTMLInputElement>) {
const newValue = parseInt(e.target.value, 10)
setCurrentValue(newValue)
setInstantExecutionCount((c) => c + 1)
setLimitedValue(newValue)
}
return (
<div>
<h1>TanStack Pacer useRateLimitedState Example 3</h1>
<div style={{ display: 'grid', gap: '0.5rem', marginBottom: '1rem' }}>
<label>
<input
type="radio"
name="windowType3"
value="fixed"
checked={windowType === 'fixed'}
onChange={() => setWindowType('fixed')}
/>
Fixed Window
</label>
<label>
<input
type="radio"
name="windowType3"
value="sliding"
checked={windowType === 'sliding'}
onChange={() => setWindowType('sliding')}
/>
Sliding Window
</label>
</div>
<div style={{ marginBottom: '20px' }}>
<label>
Current Range:
<input
type="range"
min="0"
max="100"
value={currentValue}
onChange={handleRangeChange}
style={{ width: '100%' }}
/>
<span>{currentValue}</span>
</label>
</div>
<div style={{ marginBottom: '20px' }}>
<label>
Rate Limited Range (Readonly):
<input
type="range"
min="0"
max="100"
value={limitedValue}
readOnly
style={{ width: '100%' }}
/>
<span>{limitedValue}</span>
</label>
</div>
<table>
<tbody>
<tr>
<td>Execution Count:</td>
<td>{rateLimiter.state.executionCount}</td>
</tr>
<tr>
<td>Rejection Count:</td>
<td>{rateLimiter.state.rejectionCount}</td>
</tr>
<tr>
<td>Remaining in Window:</td>
<td>{rateLimiter.getRemainingInWindow()}</td>
</tr>
<tr>
<td>Ms Until Next Window:</td>
<td>{rateLimiter.getMsUntilNextWindow()}</td>
</tr>
<tr>
<td>Instant Executions:</td>
<td>{instantExecutionCount}</td>
</tr>
<tr>
<td>Saved Executions:</td>
<td>{instantExecutionCount - rateLimiter.state.executionCount}</td>
</tr>
<tr>
<td>% Reduction:</td>
<td>
{instantExecutionCount === 0
? '0'
: Math.round(
((instantExecutionCount -
rateLimiter.state.executionCount) /
instantExecutionCount) *
100,
)}
%
</td>
</tr>
</tbody>
</table>
<div style={{ color: '#666', fontSize: '0.9em' }}>
<p>Rate limited to 20 updates per 2 seconds</p>
</div>
<pre style={{ marginTop: '20px' }}>
{JSON.stringify(rateLimiter.store.state, null, 2)}
</pre>
</div>
)
}
const root = ReactDOM.createRoot(document.getElementById('root')!)
root.render(
<div>
<App1 />
<hr />
<App2 />
<hr />
<App3 />
</div>,
)
